JPS6145584B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a trunk lid structure for an automobile, and more particularly to a trunk lid structure for an automobile in which a trunk opening is provided from the upper surface of the trunk room to the upper rear surface.

Recently, in order to improve the appearance of the trunk structure of automobiles and to make it easier to take things in and out, a trunk opening is provided from the top of the trunk to the upper rear of the trunk. It has been proposed that a trunk lid having an inclined surface and a vertically long vertical surface is attached so as to be openable and closable.

Conventionally, such a trunk lid is
A first plate member having a predetermined shape is bent to form an outer plate member having an inclined surface portion and an upright surface portion, while a drawing process is applied to the entire surface of a second plate member having a predetermined shape to form a continuous bone portion having an inverted hat-like cross section. Then, the drawn second plate member is bent to form an inner plate member having an inclined surface portion and an elevated surface portion, and the inner plate member is joined to the outer plate member. It is configured.

However, in the above-mentioned conventional trunk lid structure, when drawing the entire surface of the second plate member to form a continuous bone part, since the second plate member is an extremely large member, the amount of drawing is very large.
There was a problem in that drawing was difficult, and in addition, a very large force was required to bend the plate member having the bone portion, and the rigidity of the bent portion was significantly reduced.

Therefore, in order to deal with the above problems,
It is conceivable to divide the second plate member into two or more plate members, apply a drawing process to each member to form a bone portion, and then connect each member to the outer plate member, but in this case, However, there is a problem that the ease of assembling each member and the outer panel member becomes poor.

The present invention has been made in view of the above points, and includes a first plane part formed by drawing a plate member of a predetermined shape and having a first rib part having an inverted hat-shaped cross section around the inner plate member of the trunk lid. A second plane part having a second rib part having an inverted hat-like cross section is continuously formed around the periphery, and the boundary between the first plane part and the second plane part of the plate member after the drawing process is bent. using an inner plate member formed to have an inclined surface portion and an elevated surface portion, and further connecting a reinforcing bracket to the bottom surface of the inner plate member adjacent to the first bone portion and the second bone portion to form a closed cross section; By connecting the inner plate member to which the reinforcing bracket is fixed to the outer plate member, processing such as drawing can be easily performed, improving processability and workability, and increasing rigidity. It is an object of the present invention to provide a trunk lid structure for an automobile that can also achieve the following.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

Figure 1 shows the rear part of the car body, 1 is the car body,
Reference numeral 2 denotes a trunk opening that extends from the top surface of the trunk room of the vehicle body 1 to the rear upper part of the vehicle body 1, and a trunk lid 3 having an inclined surface 3a and a vertically relatively long vertical surface 3b can be opened and closed in the trunk opening 2. installed on.

The trunk lid 3 is made up of an outer panel member 4, an inner panel member 5, and an inner panel member 5, as shown in FIG. The outer panel member 4 is made up of reinforcing brackets 6 and 7 that are fixed on the inside, and the outer panel member 4 is shown in FIG. As shown in a,
A first plate member 8 having a rectangular substrate portion 8a and a rectangular tongue portion 8b protruding rearward from the substrate portion 8a.
By bending the base plate part 8a at a position near the tongue part 8b so that the tongue part 8b side is bent downward at a substantially right angle to the base plate part 8a, the base plate part 8a can be bent as a main body as shown in FIG. 3b. It is formed to have an inclined surface portion 4a having a slanted surface portion 4a and an elevated surface portion 4b mainly consisting of a tongue portion 8b.

Further, as shown in FIG. 4a, which is a perspective view of the inner plate member 5 viewed from the joint surface side with the outer plate member 4, the inner plate member 5 has approximately the same shape as the first plate member 8. The second plate member 9 having the base plate part 9a and the tongue part 9b is drawn to form a bulge around the base part 9a and an intermediate position thereof, and the tongue part 9
By forming a bulge around the part extending from b to a part of the substrate part 9a and punching out the part surrounded by the bulge, a reverse cross-section is formed around the periphery and at an intermediate position as shown in FIG. 4b. Hat-shaped first bone portion 10 and first plane portion 12 provided in intermediate bone portions 11, 11
and a second plane part 14 having a second rib part 13 having an inverted hat-shaped cross section around the periphery, and further, the first plane part 12 of the second plate member 9 after the drawing and punching process. By bending the boundary between the first plane part 12 and the second plane part 14, as shown in FIG.
An inclined surface section 5a and a second plane section 14 mainly consisting of
It is formed to have an elevated surface portion 5b mainly consisting of.

Furthermore, as shown in FIG. 5, which is a perspective view of the bracket 6 seen from the trunk room side, the one auxiliary bracket 6 has a structure in which the first bone portion 10 and the second bone portion 13 of the inner plate member 5 are adjacent to each other. The other auxiliary bracket 7 is connected to both ends of the bottom surface and has an inverted hat-like cross section and an inwardly curved shape so as to form a closed cross section with the inner plate member 5. As shown in FIG. 6, which is a perspective view seen from the trunk room side, similarly to the auxiliary bracket 6, there is an intermediate position between the adjacent bottom surfaces of the first bone part 10 and the second bone part 13 (a position corresponding to the intermediate bone part 11). ) to form a closed cross section with the inner plate member 5, it has an inverted hat-like cross section and an inwardly curved shape, and is formed to have cross portions at the top and bottom.

Therefore, the auxiliary brackets 6 and 7 are
As shown in Figures a and b, the inner plate member 5
A closed cross section is formed by joining with the inner plate member 5 at the boundary between the first plane part 12 and the second plane part 14 at both ends and intermediate positions of the adjacent bottom surfaces of the first bone part 10 and the second bone part 13. The two bone parts 10 and 13 are fixed so as to be continuous, and the auxiliary bracket 6,
The inner plate member 5 to which the inner plate member 7 is fixed is brought into contact with the outer plate member 4 and connected by peripheral hemming, thus forming the trunk lid 3.

Therefore, in the above embodiment, the inner plate member 5 to be coupled to the outer plate member 4 is formed by drawing the second plate member 9 and forming first ribs each having an inverted hat shape in cross section around the periphery and at an intermediate position thereof. After forming a first plane part 12 having a portion 10 and an intermediate bone part 11 and a second plane part 14 having a second bone part 13 having an inverted hat-shaped cross section around the periphery, and performing the drawing process, By having the inclined surface portion 5a and the vertical surface portion 5b formed by bending the boundary between the first flat portion 12 and the second flat portion 14 of the second plate member 9, the amount of reduction by the drawing process is reduced to a second level. Since it can be uniformly distributed over the entire surface of the plate member 9 and the amount of drawing can be reduced, drawing can be easily performed.

Moreover, the bending process of the second plate member 9 after the drawing process is performed at a position where there is no bone part at the boundary between the first plane part 12 and the second plane part 14.
The bending process can be performed without requiring a large amount of force, and thus processability and workability can be improved.

Further, the inner plate member 5 has auxiliary brackets 6 and 7 fixed to the bottom surface of the first bone portion 10 and the second bone portion 13 adjacent to each other so as to form a closed cross section with the inner plate member 5. , 7 are fixed to the inner plate member 5 and outer plate member 4 by peripheral hemming, the rigidity of the trunk lid 3, especially the rigidity between the inclined surface 3a and the vertical surface 3b of the trunk lid 3, is greatly increased. Therefore, even if a large external force is applied to the trunk lid 3 when the trunk lid 3 is opened or closed, the trunk lid 3 will not be deformed. Moreover, since the inner and outer plate members 5 and 4 can be easily and simply connected, the processability and workability can be further improved.

In the above embodiment, the two intermediate ribs 11, 11 are provided on the first plane part 12 of the second plate member 9 to increase the rigidity of the inclined surface part 5a of the inner plate member 5. Depending on the length of the second plate member 9 in the vehicle width direction, one or three or more may be provided, and in some cases, sufficient rigidity of the inclined surface portion 5a can be ensured even if they are not provided. .

As explained above, according to the trunk lid structure of an automobile according to the present invention, the outer panel member has an inclined surface portion formed by bending a first plate member having a predetermined shape and an vertically long vertical portion, and a predetermined shape. A second plate member having a shape is drawn to form a first plane part having a first bone part having an inverted hat-like cross section around the periphery, and a second plane part having a second bone part having an inverted hat-like cross section around the periphery. an inner plate member having an inclined surface portion and an elevated surface portion formed by bending the boundary between the first plane portion and the second plane portion of the second plate member after the drawing process; A reinforcing bracket is connected to the adjacent bottom surfaces of the first bone portion and the second bone portion of the plate member and forms a closed cross section by joining with the inner plate member, and the inner plate member to which the auxiliary bracket is fixed is connected to the inner plate member. By joining the outer panel member by peripheral hemming, processing such as drawing and bending can be performed extremely simply and easily even on a trunk lid having an inclined surface and a relatively long elevation in the vertical direction. In addition to improving processability and workability, the rigidity of the trunk lid can be greatly increased, and deformation of the trunk lid when external forces are applied can be reliably prevented.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the present invention, and FIG. 1 is a perspective view of the rear part of an automobile body, FIG. 2 is a perspective view of the rear side of the trunk lid, and FIG. 3 is a diagram illustrating the manufacturing and processing of the outer panel member of the trunk lid. FIG. 4 is a perspective view of the outer panel member seen from the front side to explain the procedure; FIG. 6 is a perspective view of the auxiliary bracket as seen from the trunk room side, and FIGS. 7a and 7b are sectional views taken along line AA and line BB in FIG. 2, respectively. 1... Vehicle body, 2... Trunk opening, 3... Trunk lid, 3a... Inclined surface, 3b... Elevated surface,
4... Outer plate member, 4a... Inclined surface part, 4b... Elevated surface part, 5... Inner plate member, 5... Inclined surface part, 5b...
...Elevated surface part, 6, 7...Auxiliary bracket, 8...First plate member, 8a...Base part, 8b...Tang piece part, 9
...Second plate member, 9a...Base part, 9b...Language piece part, 10...First bone part, 11...Intermediate bone part, 12
...first plane part, 13...second bone part, 14...second plane part.

Claims (1)

[Claims] 1. An outer panel member having an inclined surface portion and a vertically relatively long vertical surface portion formed by bending a first plate member having a predetermined shape, and a second plate member having a predetermined shape are drawn, and a cross section with an inverted shape is formed around the periphery. A first plane part having a first bone part having a hat shape and a second plane part having a second bone part having an inverted hat shape in cross section are continuously formed, and the second plate member after the drawing process is formed. an inner plate member having an inclined surface portion and an elevated surface portion formed by bending the boundary between the first plane portion and the second plane portion; and the first bone portion and the second bone portion of the inner plate member that are adjacent to each other. and a reinforcing bracket connected to the bottom surface and forming a closed cross section by joining with the inner plate member, and the inner plate member to which the reinforcing bracket is fixed is joined to the outer plate member by peripheral hemming. Automobile trunk lid structure.